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NEMATHELMINTHES

NEMATHELMINTHES. I CHARACTERISTICS 1. Bilateral symmetry 2. Triploblastic 3. No segmentation 4. Complete digestive tract 5. Pseudocoel present 6. Many parasitic forms present. NEMATHELMINTHES contd. 7. Moves in S motion 8. Tube within a tube body plan

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NEMATHELMINTHES

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  1. NEMATHELMINTHES • I CHARACTERISTICS • 1. Bilateral symmetry • 2. Triploblastic • 3. No segmentation • 4. Complete digestive tract • 5. Pseudocoel present • 6. Many parasitic forms present

  2. NEMATHELMINTHES contd. • 7. Moves in S motion • 8. Tube within a tube body plan • 9. “Nematodes” are threadlike • 10. Dieocious • II EXAMPLES • 1. HOOKWORMS • 2. TRICHINA WORMS • 3. PIN WORMS

  3. NEMATHELMINTHES contd. • 4. Filaria Worm (elephantiasis) • 5. Eye Worm • 6. Guinea Worm • III ASCARIS • 1. Good example of tube within a tube body plan. • 2. Pseudocoelomate

  4. NEMATHELMINTHES contd. • 3. Psarasite of man & pigs • IV SYSTEMS (p. 175) • 1. Digestive • 2. Excretory • 3. Reproductive

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